Changed

• until() can now take any number of sync or async arguments. (#555)
• [Breaking] guard() supports multiple dependencies. If the first argument to guard() is an array, the array items are checked for equality to previous values. (#666)
• [Breaking] Renamed classMap.js and styleMap.js files to kebab-case. (#644)

Added

• Added cache() directive. (#646)
• Removed Promise as a supposed node-position value type. (#555)
• Added a minimal <template> polyfill.

Removed

• [Breaking] Removed the when() directive. Users may achieve similar behavior by wrapping a ternary with the cache() directive.

Fixed

• Bound attribute names are rewritten to avoid IE/Edge removing SVG and style attributes. (#640)
• Ensure shady-render prepares styling for a scope before attaching child elements. (#664)
• Handle CSS Custom Variables in the styleMap directive. #642)

Changed

• [Breaking] Directives are now defined by passing the entire directive factory function to directive(). (#562)

Fixed

• Fix issue on obscure browsers that do not accept event listener objects by using callback as event part listener (#581)
• Fix KeyFn and ItemTemplate types (#570)
• Don't use export * to workaround rollup bug (#556)
• eventContext is no longer used as the this value for event listener objects (object with a handleEvent method), as the object itself is supposed to be the this value. (#576)

Changed

• Re-implemented repeat directive for better performance (#501)
• Updated TypeScript dependency to 3.1
• [Breaking] render() now takes an options object as the third argument. (#523)

Added

• Event listeners are called with a configurable this reference, which is set via the eventContext option to render(). (#523)
• Support for event listener options, by passing the listener itself as both the second and third arguments to add/removeEventListener().

• Fixed removing event handlers when setting them to undefined.
• Allow the text "{{}}" to appear in templates.
• Optimized clearing of Parts.
• Added unsafeHTML() directive to bind values as HTML source.
• Optimizations, simplification and bug fixes of Array handling code.
• Update to extension API: added partCallback parameter to render().
• Added the directive() decorator function to create directives. Functions values are no longer treated as directive by default, simplifying declarative event handlers.